Assignment of Assignor's Interest

Recorded: 2026-05-19 Pages: 3

Assignor

O'CALLAHAN, DENNIS M.

Executed: 2005-05-04

Assignee

400 SOUTH LASALLE STREET, CHICAGO, ILLINOIS, 60605

Covered Properties (2)

System and Method for Trading Packaged Collar Options on an Exchange

Patent: 8,121,934 →

Application: 12/481,388 →

Publication: US 2010/0010928

System and Method for Creating and Trading Packaged Collar Options on an Exchange

Patent: 8,386,374 →

Application: 13/399,217 →

Publication: US 2012/0265665

Related Assignments (2)

Other recorded transfers of the patents in this record — the chain of ownership.